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[pccts] / h / PBlackBox.h

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+#ifndef PBLACKBOX_H
+#define PBLACKBOX_H
+
+/*
+ * SOFTWARE RIGHTS
+ *
+ * We reserve no LEGAL rights to the Purdue Compiler Construction Tool
+ * Set (PCCTS) -- PCCTS is in the public domain.  An individual or
+ * company may do whatever they wish with source code distributed with
+ * PCCTS or the code generated by PCCTS, including the incorporation of
+ * PCCTS, or its output, into commerical software.
+ * 
+ * We encourage users to develop software with PCCTS.  However, we do ask
+ * that credit is given to us for developing PCCTS.  By "credit",
+ * we mean that if you incorporate our source code into one of your
+ * programs (commercial product, research project, or otherwise) that you
+ * acknowledge this fact somewhere in the documentation, research report,
+ * etc...  If you like PCCTS and have developed a nice tool with the
+ * output, please mention that you developed it using PCCTS.  In
+ * addition, we ask that this header remain intact in our source code.
+ * As long as these guidelines are kept, we expect to continue enhancing
+ * this system and expect to make other tools available as they are
+ * completed.
+ *
+ * ANTLR 1.33
+ * Terence Parr
+ * Parr Research Corporation
+ * with Purdue University and AHPCRC, University of Minnesota
+ * 1989-1995
+ */
+
+#include <iostream.h>
+
+template<class Lexer, class Parser, class Token>
+class ParserBlackBox {
+protected:
+       DLGFileInput *in;
+       Lexer *scan;
+       _ANTLRTokenPtr tok;
+       ANTLRTokenBuffer *pipe;
+       Parser *_parser;
+       FILE *file;
+public:
+       
+       ParserBlackBox(FILE *f)
+               {
+                       file = f;
+                       in = new DLGFileInput(f);
+                       scan = new Lexer(in);
+                       pipe = new ANTLRTokenBuffer(scan);
+                       tok = new Token;
+                       scan->setToken(tok);
+                       _parser = new Parser(pipe);
+                       _parser->init();
+               }
+       ParserBlackBox(char *fname)
+               {
+                       FILE *f = fopen(fname, "r");
+                       if ( f==NULL ) {cerr << "cannot open " << fname << "\n"; return;}
+                       else {
+                               file = f;
+                               in = new DLGFileInput(f);
+                               scan = new Lexer(in);
+                               pipe = new ANTLRTokenBuffer(scan);
+                               tok = new Token;
+                               scan->setToken(tok);
+                               _parser = new Parser(pipe);
+                               _parser->init();
+                       }
+               }
+       ~ParserBlackBox()
+               {
+                       delete in; delete scan; delete pipe; delete _parser; delete tok;
+                       fclose(file);
+               }
+
+       Parser *parser()        { return _parser; }
+};
+
+#endif